Picture thatching? Samsung Television LE40A656A1F I'm not 100% sure how to word this but here's my best :) Television picture has extremely small grid across entire screen. When connected through HDMI the same issue but slightly larger gridding occurs, another problem is when the colour's yellow and red come near the far left of the svreen , lines occur and clouding. Sorry if this isn't understandable.

SOURCE: Large colour lines / bands on screen

Thats your midddle driver board on the botton m8.

Try the technique on this video if that doesn't work ,replace the board by with another of the same part number.Cheap to buy.Ebay.LCDTV Spares shops online

http://www.youtube.com/watch?v=9NPobj0_GSo

Testimonial: "thanks so much for the info mate! The issue comes and goes so I will see how it pans out before I attack it with the soldering iron!"

SOURCE: white horizontal, zig-zagging lines

Colored lines going across the screen and does this on all channels.

SOURCE: Screen gone yellow and green

I have a 21'' NEC TV Screen and it about 3 year old. the colour has gone to yellow and green color and the red etc

Eric Rotmil

• 587 Answers
• Posted on Dec 01, 2009

SOURCE: Samsung LNS4041DX/XAA White horizontal lines

Hi my name is Roety,
I can help you with your issue ,
If the lines are present on every input you most likely have a bad screen. We usually replace the mainboard first because its cheaper .
Check part prices at encompass.com login as a guest
　
　
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Thanks

I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771

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SOURCE: Blue grid popping up and filling the screen

You have a defective light engine. Here's what you can do..we just went through this about 2 months ago. Call Hitachis custimer RELATIONS department at 800-654-7013 and tell them you have a defective light engine. When you initially call, they will act like they've never heard of this problem but they have. They will give you the name of some certified Hitachi Dealers in your area. Once you call a tech to come out and confirm that it's a bad light engine, call Hitachis customer relations department back and they will call the dealer directly to confirm the problem. Once the problem has been confirmed by the dealer, Hitachi will send the part directly to the dealer to come out and install.

Now here's the deal. Hitachi will repalce the part (cost around $1500) but they will ask you to cover the install. Our install was $400 but others on this board have paid less (range $200-$500). If your set is still under warranty, Hitachi will pay for the install and the part but regardless if your set is under warranty or not, they ARE paying for a brand new light engine.

A couple of quick things to look out for, please do not let any dealer or store tell you that you have to pay for this part. Hitachi is covering the cost. They have not recalled this part but they are replacing it after you have a tech out to confirm the problem. Also, only deal with the CUSTOMER RELATIONS department and not Hitachis customer service department. The regular customer relations department is no help at all. Good Luck:)